Figure 4 from: Onuferko TM (2018) A revision of the cleptoparasitic bee genus Epeolus Latreille for Nearctic species, north of Mexico (Hymenoptera, Apidae). ZooKeys 755: 1-185. https://doi.org/10.3897/zookeys.755.23939

Figure 4 Epeolus ainsliei A female, lateral habitus (scale bar 3 mm) B female holotype, dorsal habitus (scale bar 3 mm) C male, lateral habitus (scale bar 3 mm), and D female axillae and mesoscutellum, dorsal view (scale bar 0.5 mm; blue lines indicate the posterior extent of the axilla relative to the length of the mesoscutellum; red lines indicate the extent of the free portion of the axilla relative to its entire medial length)